Increased Scrutiny of Insider Trading in Prediction Markets
According to Bloomberg, as prediction markets like Polymarket and Kalshi expand, the issue of betting with non-public information is under greater scrutiny; Polysights has flagged approximately 34,000 potential insider trades.
In the first half of this year, suspicious trading amounts on Polymarket reached about $200 million, with geopolitical markets being particularly prominent; profits are highly concentrated, with the top 1% of wallets accounting for over half of the earnings, and 57% of related wallets were created less than 24 hours before trading. Some traders are using multiple wallets to split orders to evade detection, with 38 associated addresses in the Iran-Venezuela market having a win rate of 98%, generating $1.6 million in profits.
Polymarket has referred nearly 100 wallets to law enforcement, while Kalshi has strengthened identity checks and restricted participation from sensitive individuals.
Source: Public Information
ABAB AI Insight
Polymarket and Kalshi previously grew rapidly through event contracts, attracting significant liquidity in high-profile markets like the 2024 election, but also exposed risks of information asymmetry, prompting the platforms to gradually upgrade their monitoring systems.
In terms of capital flow, informed traders are using multiple addresses and discreet entry to arbitrage, while the platforms are mobilizing compliance resources to address regulatory pressure, strategically cleaning up to enhance long-term legitimacy and attract institutional funds.
Similar to the early proliferation of insider trading in traditional financial markets followed by strengthened regulation, and the gradual compliance of early crypto markets after chaos, prediction markets are currently transitioning from wild growth to a regulated maturity phase.
This fundamentally reflects regulatory changes: betting with information advantages drives platform and law enforcement intervention, with the mechanism being that high returns attract arbitrage while amplifying reputational risks, driving capital from gray high-win-rate trades to transparent compliant markets, ultimately enhancing market efficiency and institutional acceptance in the long run.
ABAB News · Law of Cognition
- High win rates often conceal information advantages.
- The hotter the prediction market, the closer the regulation.
- Cleaning up insider trading is essential to welcome institutional capital.